Which was the main cause of the great migration to the United States in the late 1800s and early 1900s?

(1 point)
Responses

the need for workers in the U.S.
the need for workers in the U.S.

political unrest in Europe
political unrest in Europe

religious persecution in Eastern Europe
religious persecution in Eastern Europe

scarcity of land and money
scarcity of land and money

The need for workers in the U.S.